ADMM-Based Phase Retrieval ADMM Tabanli Faz Geri Kazanimi
34th Signal Processing and Communications Applications Conference, SIU 2026, İstanbul, Türkiye, 7 - 10 Temmuz 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/siu71813.2026.11636524
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: ADMM, alternating projections, image reconstruction, inverse problems, phase retrieval
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
Phase retrieval is a fundamental inverse problem that aims to reconstruct an image from Fourier magnitude measurements. In this paper, an alternating direction method of multipliers (ADMM) based phase retrieval method is developed, which can be interpreted as a generalized alternating projection framework. The developed method has closed-form and efficient update steps. In addition, the tolerance parameter for data consistency is updated during iterations by relating it to the measurement noise. The results obtained for different image sizes and SNR levels show that the proposed method provides promising reconstruction performance.